Lawn sprinkler



s. D. BAKER 2,141,077

LAWN SPRINKLER Filed Jurie- 16, 1957 'INVENTOR 5 ATTORNEYS Patented Dec. 20, 1938 UNITED STATES PATENT OFFICE LAWN SPRINKLER Stephen D. Baker, Eau Gallic, Fla. Application June 16, 1937, Serial No. 148,425

1 Claim.

' which is efiicient and comparatively inexpensive to manufacture and has no moving parts, one which is preferably made of porcelain and, therefore, not subject to rust or corrosion, and which is self-cleaning in that it is capable of ejecting the ordinary sand or dirt which it is apt to encounter in use, and thus prevent clogging.

These objects I attain in the novel combination and arrangement of parts herein described and claimed, the nature and use of which will be obvious from their illustrations in the accompanying drawing, in which:-

Figure 1 is a perspective View of my improved lawn sprinkler;

Figure 2 is a plan view of the same;

Figure 3 is a section on the line 3-3 of Figure 2;

Figure 4 is a bottom view of the casing of my device;

Figure 5 is a plan view of the plug member of the same;

Figure 6 is an end view of the casing; and

Figure 7 is a perspective view of said plug member.

In the drawing in which similar reference numerals denote corresponding parts, I designates a casing, the interior of which is formed into a circular chamber 2 by means of wall 3. The circular wall 3 terminates a short distance from the bottom of the casing to provide a flange or seat 4, and is pierced by a port 5, which communicates with a screw-threaded inlet opening 6 in the outer wall of the casing for connection to a water supply hose or pipe. The opening 6 extends through the casing to the wall 3 which is closed to said opening except through the tangential port 5 out into the wall 3 which is much smaller than the opening 6. On the flange 4 and substantially opposite the port 5 is a projection I. In the top of the casing is an outlet orifice B.

Adapted to fit into the chamber 2 of the casing is a plug member 9 which consists of a base II], a cylindrical post II, slightly tapered at l2 and rising from base l0 and partly encircling the post II is an inclined plane I3. The said base, post and inclined plane are in one piece and the slightly tapered top of the post is made smaller than the diameter of the outlet orifice 8. In the base is a recess or cut-out part I I. The hole I5 is for the purpose of holding the sprinkler in place by means of a nail or otherwise.

In the manufacture o I and 9 are separatel combined. As will be f the device, the members y constructed and then obvious, this is done by inserting member 9 into chamber 2 of casing I so that projection 'I on I4 on the base IEI.

The tapered top the flange fits into recess I2 of the post I I will then project slightly within the outlet orifice B. The seat or flange 4 is located at such a distance from the bottom wall of the casing that when member 9 is in proper position its base will be flush with the bottom of the casing and it will be spaced from the wall of chamber 2 except where its inclined plane substantially contacts the Wall, of said chamber.

In manufacturing the device the two parts are formed of pulverized clay by means of dies.

are then cemented tog They ether with a solution of clay and Water and after being thoroughly dried are dipped into, or sprayed with, china glaze and placed in a kiln and In the operation of the .device the water entering the inlet port 5, which is at a tangent to the normal flow of the motion by contacting t water, is given a rotary he inner circular wall of the chamber 2 and the post II. This swirling is continued and intensified as the water is ascending inclined plane I3 and directed toward the orifice 8. As the water approaches the orifice,

its velocity is increased due to the restriction of the orifice by the top of the post, and it emerges in a fine circular spray.

It will be seen from the foregoing that with a minimum of fixed parts I have devised a sprinkler of the utmost simplicity.

What I claim is:-

A lawn sprinkler comprising a casing the top of which is substantiall y flat and is pierced with of the said post extend outlet orifice, whereby ing slightly into the said entering liquid is caused to move in an ascending spiral flow to said outlet orifice substantially as forth.

and for the purpose set STEPHEN D. BAKER. 

